Adaptive Comb Filtering in Speech Enhancement by Spectral Subtraction

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F07%3APU68869" target="_blank" >RIV/00216305:26220/07:PU68869 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Adaptive Comb Filtering in Speech Enhancement by Spectral Subtraction
Original language description
An improvement of the classical single-channel speech enhancement technique by comb filtering is presented in the paper. The comb filter is adaptive and tuned by the estimated pitch frequency. It is constructed empirically in the frequency domain using two approaches and is applied in voiced frames only also in frequency domain. The pitch frequency is estimated from enhanced speech in the frequency domain too. As classical speech enhancement technique, which is used prior comb filtering, the minimum mean-square error log-spectral amplitude estimator was applied. The obtained enhancement of speech corrupted by different noise sources is evaluated and compared for configuration with and without comb filtering by informal listening tests and using signal-to-noise ratio.
Czech name
Adaptivní hřebenový filtr pro zvýrazňování řeči spektrální subtrakcí
Czech description
Hřebenový filtr je použit jako postprocessing klasické techniky pro zvýrazňování metodou spektrální subtrakce.

Project
<a href="/en/project/1ET301710509" target="_blank" >1ET301710509: Sophisticated noise and defect suppression devices in speech communication and transmission for new generation mobile and cable networks</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2007
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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